Tedder \Ted"der\, n. A machine for stirring and spreading hay, to expedite its drying.
Source: Webster's Revised Unabridged Dictionary (1913)
Tedder \Ted"der\, n. [OE. [root]64. See Tether.] Same as Tether.
Tedder \Ted"der\, v. t. [imp. & p. p. Teddered; p. pr. & vb. n. Teddering.] Same as Tether.